fix: 修复配额说明重复和undefined问题

- 在editStorageForm中初始化oss_storage_quota_value和oss_quota_unit
- 删除重复的旧配额说明块，保留新的当前配额设置显示

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/node_modules/@smithy/middleware-retry/dist-es/isStreamingPayload/isStreamingPayload.browser.js

@@ -0,0 +1 @@
+export const isStreamingPayload = (request) => request?.body instanceof ReadableStream;

backend/node_modules/@smithy/middleware-retry/dist-es/isStreamingPayload/isStreamingPayload.js

@@ -0,0 +1,3 @@
+import { Readable } from "stream";
+export const isStreamingPayload = (request) => request?.body instanceof Readable ||
+    (typeof ReadableStream !== "undefined" && request?.body instanceof ReadableStream);